:root {
      --bg:#0f172a; --bg-soft:#eeead6; --txt:#0b1220; --brand:#2563eb; --white:#e2e8f0; --radius:14px; --shadow:0 12px 30px rgba(2,6,23,.12);
    }
    *{box-sizing:border-box;margin:0;padding:0}
    body{background:var(--bg-soft);color:var(--txt);font-family:Inter,system-ui,sans-serif;line-height:1.6;}
    main{max-width:900px;margin:80px auto;padding:42px 18px;}
    h1,h2{font-family:'Libre Baskerville',serif;color:#0f172a;}
    h1{font-size:30px;text-align:center;margin-bottom:18px;}
    article{background:#fff;padding:28px;border-radius:12px;box-shadow:var(--shadow);}
    article p{margin-bottom:14px;}
    article h2{margin-top:22px;margin-bottom:8px;}
    ul{margin-left:20px;margin-bottom:12px;}
    .back{text-align:center;margin:28px 0;}
    .back a{background:var(--brand);color:var(--white);padding:10px 16px;border-radius:12px;text-decoration:none;font-weight:700;}
    footer{max-width:900px;margin:18px auto 28px auto;padding:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;color:#333;}
    footer .logo{display:flex;align-items:center;gap:12px;}
    footer .logo img{height:42px;}
    footer p.small{font-size:13px;color:#555;}

    

   /* Botões de áudio */
.btn-audio {
  margin: 10px 5px 20px 5px;
  padding: 12px 18px;
  border: none;
  background: var(--brand);
  color: white;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  transition: background .3s;
}

/* Centraliza SOMENTE os botões */
.audio-buttons {
  text-align: center;
}
sition:background .3s;
    
    .btn-audio:hover{background:#1e4fc5;}


    .whatsapp{
      position:fixed; right:18px; bottom:18px; width:56px; height:56px; border-radius:50%;
      background:#25d366; color:#fff; display:flex; align-items:center; justify-content:center;
      font-size:26px; text-decoration:none; box-shadow:0 8px 22px rgba(37,211,102,.4); z-index:1000;
    }
    .whatsapp img{width:28px; height:28px}